Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e82d079685fbae…

MALICIOUS

PDF

52.4 KB Created: 2020-08-19 10:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97ed1edb87c7990e4a642758be1445eb SHA-1: b59234dd8f411eeae3e28db8f522c954412e6b34 SHA-256: b7e82d079685fbaedd9ac526ff710db9afa345bc78454f9aab5da52ee9e54eac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a document about student report cards. The ML classifier strongly indicates maliciousness, and the presence of numerous external links, many pointing to Shopify domains, suggests a link farm or content distribution network used for hosting malicious files. The primary malicious IOC is the ttraff.cc redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=general+comments+for+students+report+cards In PDF document text
    • http://powaw.shelter-share.org/uploads/1/3/1/4/131407315/8370413.pdfIn PDF document text
    • http://files.tracygreenhalgh.com/uploads/1/3/1/4/131438038/6070081.pdfIn PDF document text
    • http://files.pgvisas.ca/uploads/1/3/1/8/131858287/6347494.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9343/0177/files/history_of_behaviour_therapy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/dipefusulemoseseje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1697/7559/files/80761111213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/fijoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3156/8290/files/78921501667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/xepanulawefavewof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7383/6958/files/762402936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7440/5020/files/32566588196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/newemudoduguranefoxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9473/2953/files/9790649535.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A91 5332 bytes
SHA-256: 4128e537699f66fabda40da55dff544ad6d55ab211c0c0add4f3ced80a06f34b
font_01_sfnt_off00008c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C99 10044 bytes
SHA-256: 4f99900f7e80021befa6a8d98eff602efe456f31d9384c50256f06b602f05f6d
font_02_sfnt_off0000af16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF16 16164 bytes
SHA-256: 0646a63a478fe53468b8dbbe05b608d617a04836cde27f490c8d0ce00ae8a9f2

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